You are supposed to put titles in italics
It indicates that Huck frequents places perhaps grocery stores where the conditions are not sanitary what with "sickly eggs and rotten cabbages and dead cats" in other words, Huck cannot afford to frequent fancier shops or fancier homes because he is poverty stricken and used to such sights.
A simile. A simile compares two things using the words as, like, etc.
I am non prejudice in favor or against one group person compared to another
Answer:
The most significant difference between Truffaut's adaptation and the novel is that the film portrays Montag and Clarisse falling in love, and Montag helps Clarisse escape the firemen unharmed.